Frustration with what I love to do

Ive been wanting to keep improving my art for the maybe the 11 of so years ive been drawing. Its been a slow-ish yet so speedy process as time feels faster with each day. I do notice the changes in my art, it dosent resemble the works ive made in 2016 whatsoever and you could even say Im rather happy with my art currently. However I still lack imortant skills within it. Im not one to draw backgrounds and when I do I can't to seem to fit my characters in them properly. Lighting is still the bane of my exsistance and even then I still have anatomy struggles. I like my work and I understand i'll be the first to see problems with my art as Im the biggest critique of my own creations, that goes for about anyone. I honestly need to start actually doing studies like ive been saying I would for like the past 5 years or so. BUt right now its been especially frustrating. I would' like to make cute art for my characters and maybe make refrence sheet but something so wrong everytime I look at it from afar or just normally and I can never seem to know how to fix it. The later in the day it is aslo seems to have an effect on my artworks in some way. It makes me hate it more, I feel like im making a mistake with every stroke of my pencil. Leaves me in a rather bad mood 3:[ .  Take the drawing im currently working on as an example. 

obviously its still in its roughs stages but I the angles are off the positions of both characters are off (the vampire is my oc roux by the way, love her forever and ever) (the other character is by a friend) I think im just in a rather bad mood and maybe if i found something else to do i'd be alright. only time will tell or something.